In a group of 18 pupils, 2 play the flute only.
6 play the piano only.
7 play both instruments.
A student is chosen at random.
What is the probability the student plays neither instrument

Answer:

Al hijo mayor le corresonden 0,18 Hm²

Al segundo hijo  le corresponden 1200 m²

Al hijo menor le corresonden   6000000 cm²

Step-by-step explanation:

Al hijo mayor le corresponden 18 Dm²  la mitad de la finca

En Hm²     sn 18 /100   0,18 Hm²

Al hijo menor le corresponden 1/3 de la mitad de la finca (18 Dm²)

es decir  1/3 * 18 Dm²      6  Dm²    

en m²    serán      6 * 100 = 600 M²

y en cm²      600 * 10000 = 6000000 cm²

Al segundo hijo le corresponden 2/3 de la mitad es decir

2/3 * 18  = 12 Dm²  o     12 * 100  = 1200 m²

Answer:

80 rods of steel.

Step-by-step explanation:

Here is the complete question

A company makes steel rods shaped like cylinders. Each rod has a radius of 3 centimeters and a height of 20 centimeters. If the company used 45,781.2 cm³ of steel, how many rods did it make?

Solution

Since the steel rod is a cylinder whose volume, V = πr²h where r = radius of cylinder = 3 cm and h = height of cylinder = 20 cm.

We substitute these into V to find the volume of one rod.

So, V = πr²h

= π(3 cm)² × 20 cm

= π × 9 cm² × 20 cm

= 180π cm³

= 565.49 cm³

Since 45,781.2 cm³ of steel was used, this total volume of steel, V' equals the number of rods, n times the volume of one rod, V.

So, V' = nV

Making n subject of the formula, we have

n = V'/V

Substituting V' and V into the equation, we have

n = 45,781.2 cm³/565.49 cm³  

n = 80.96

We round n = 80.96 down to 80 since we cannot have a decimal number of rods.

So, n = 80 rods

So, the company made are 80 rods of steel.

Answer:

≈ £ 4584.38

Step-by-step explanation:

Firstly, we need to find the number of litres that Mr. Leonard needs to fill up his tank:

We know that there is already 450 litres in the 1200 litre tank, so he must need 1200 - 450 = 750 litres.

I'm not quite sure what the variable p means, but I'm going to assume that p represents the number of litres and that 81.5 is the price per litre in pounds.

So:

Total price = 81.5p

Total price = 81.5(750)

Total price = £61125

We have to remember though that the question is asking for the discount and not the discounted price, so:

61125 × 7.5%

61125 × 0.075 = 4584.375

≈ £ 4584.38

Answer:

The answer to no. 3 is 3

Step-by-step explanation:

No 3 is 3 x^9/2

Answer:

C) add 5 to each sides.

Step-by-step explanation:

1) Add 5 to both sides.

[tex]15 + 5 = y[/tex]

2) Simplify 15 + 5 to 20.

[tex]20 = y[/tex]

3) Switch sides.

[tex]y = 20[/tex]

You need to add 5 to each sides in order to solve this equation. if you do, you'll get an answer of 20.

Answer:

0

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(5-5)/(-4-2)

m=0/-6

m=0

Answer:B

B

N

B

Step-by-step explanation:

Answer:

-15 and -2

Step-by-step explanation:

Since a negative times a negative equals a positive, but when added, still stays a negative, the factors must both be negative.

Negative Factors of 30:

-30 + -1 = -31

-15 + -2 = -17

-10 + -3 = -13

-6 + -5 = -11

The two factors of 30 that add up to -17 are -15 and -2.

Hope this helps. Have a nice day.

Answer:

-.54*8

And we get: -4.32

Step-by-step explanation:

9514 1404 393

Answer:

  (d)  8

Step-by-step explanation:

Corresponding sides are proportional.

  ED/EG = EC/EF

  (6x +3)/17 = (8x -1)/21

  21(6x +3) = 17(8x -1)

  126x +63 = 136x -17

  80 = 10x . . . . . . . . . . . add 17-126x

  8 = x . . . . . . . . . . divide by 10

Answer:

1 - 7

3 - 11

5 - 15

Step-by-step explanation:

pls brainliest

Answer:

Step-by-step explanation:

B   no b/c  7 miles is 12,320 yds and 40 times around route is only 9600 yds... keep running cyrus.. :P  

Answer:

21

Step-by-step explanation:

sum of all numbers is 10×14=140

add the 6no=107

sum of3 no is 3×4=12

107+12=119

140-119=21

m=21

Answer:

D - 10

Step-by-step explanation:

15x - 30 = 10x + 20

15x = 10x + 50

5x = 50

x = 10

Answer:

154

113.04 in

Step-by-step explanation:

Area of a circle = Tr²

Circumference of a circle = 2Tr

T = 3.14

r = radius

The radius has to be determined to calculate the area of the circle

43.96 in = 2  x r x 3.14

r = 43.96 in / 2  x 3.14

= 7 in

Area = 3.14 x 7² = 153.86 in = 154 in²

Answer:

x^2=25

x=5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

here's your solution

=> x^2 + 5 = 30

=> take constant to right side

=> x^2 = 30 - 5

=> x^2 = 25

=> now take square to right side it will be

converted into root

=> x = √25

=> x = 5

hope it helps

Answer:

Using the Pythagorean Theorem we can see that:

[tex]9^2+40^2=1681\\\sqrt{1681}=41[/tex]

Thus, x is 41.

Answer:

the answer a

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

16.75 cm

Step-by-step explanation:

The circumference of the circle is πd

The diameter is 16, so the circumference is 16π.

The minute hand goes for 20 min between 3:12 and 3:32

20 min is 1/3 of 60 min.  

Therefore, the minute hand swept 1/3 of the circumference, or 1/3(16)π

1/3(16)π = 1/3(16)(3.14) = 16.75 cm

Answer:

no enough info

Step-by-step explanation:

Answer:

36%

Step-by-step explanation:

Answer:

25 cubic feet

Step-by-step explanation:

You need to convert all units to feet and then multiply the dimensions.

24 inches is 2 feet

30 inches is 2.5 feet

So, you would multiply 5X2X2.5= 25.

Answer: 36(1/3) yards. If thats an option not 100% sure tho.

Step-by-step explanation:

Mark me brainliest.

Answer:

a

Step-by-step explanation:

a

Answer:

72 units

its math really

Answer:

a

Step-by-step explanation:

a

Answer:

240

Step-by-step explanation:

1. Area of two small triangles (OR one big) + Area of rectangle

2. Triangle

A(t) = 4*10 = 40 [4*10/2 + 4*10/2]

3. Rectangle

A(r) = 20*10 = 200

4. Combined Area

40+200=240

Step-by-step explanation:

So this figure has two parts:- A triangle and a rectangle

We can first solve area of Triangle

[tex] = \frac{1}{2} bh[/tex]

So the base is 20 and height is 4

[tex] \frac{1}{2} \times 20 \times 4 \\ = 10 \times 4 \\ = 40[/tex]

Now the area of rectangle

[tex] = l \times b[/tex]

Length is 20 and breadth is 10

[tex]l \times b \\ 20 \times 10 \\ = 200[/tex]

So the total area is 200 + 40 which is equal to 240

Answer:

.133

Step-by-step explanation:

1 is in the tenths place

3 is in the hundredths place and

2 is in the thousandths place

when given at what place to be rounded to the answer should reflect the numbers to the thousandth place

so look to the right 5 or more add one to the left number

5 or less leave the number in the thousandths place as is

00000.1325

Step-by-step explanation:

Since rounding numbers dealso with real numbers or figures, .1325 will be represented as 0.1325 and it deals with numbers before the decimal which we also called significant numbers. those after are not significant.

So therefore in relation to this; 0.1325 the decimal will be moved three times to the left because thousands means there zeros. the result will be 0000.1325

Answer:

6.50

Step-by-step explanation:

Is it

Answer: 72

Step-by-step explanation:

Answer:

72

Step-by-step explanation:

Circumference of a circle = 2πr

Area of a circle: πr^2

Plug in:

C = 2πr

30.1 = 2(3.14)r

30.1 = 6.28r

r = 4.79 (Dividing both sides by 6.28)

Use area of the circle:

A = 3.14(4.79)^2

= 72.044474

Round to nearest whole number = 72